Sum of Logic

The Summa Logicae ("Sum of Logic") is a textbook on <a href="/facts/Logic/8JnpJLtt">logic</a> by <a href="/facts/William_of_Ockham/swyfVda2">William of Ockham</a>. It was written around 1323.

Systematically, it resembles other works of medieval logic, organised under the basic headings of the <a href="/facts/Aristotelianism/wEhHXC5B">Aristotelian</a> <a href="/facts/Predicable/Dl5aDh0b">Predicables</a>, <a href="/facts/Category_of_being/xG73S2Af">Categories</a>, <a href="/facts/Terminology/1tfqvX1h">terms</a>, <a href="/facts/Proposition/0877MFMD">propositions</a>, and <a href="/facts/Syllogism/cgpmd6jB">syllogisms</a>. These headings, though often given in a different order, represent the basic arrangement of scholastic works on logic.
This work is important in that it contains the main account of Ockham's <a href="/facts/Nominalism/3FE99hPX">nominalism</a>, a position related to the <a href="/facts/Problem_of_universals/QEVe2MSK">problem of universals</a>.

Sum of Logic open-in-new

Sum of Logic